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the company claimed it had the ability to clean up a by-product of gold mining the toxic tailings promising to deal with them and to extract remaining gold from them via gold cyanidation the company shipped its waste product to

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1 32 direct gold recovery by cyanidation was very low 2 8 while biooxidation was efficient in both cases approximately 90 of sulfide sulfur was oxidized the efficiency of cyanidation was low 39 and 32 respectively this fact

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